aoqi@0: /*
aoqi@0:  * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@1: /*
aoqi@1:  * This file has been modified by Loongson Technology in 2015. These
aoqi@1:  * modifications are Copyright (c) 2015 Loongson Technology, and are made
aoqi@1:  * available on the same license terms set forth above.
aoqi@1:  */
aoqi@1: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "classfile/javaClasses.hpp"
aoqi@0: #include "code/codeCache.hpp"
aoqi@0: #include "compiler/disassembler.hpp"
aoqi@0: #include "gc_interface/collectedHeap.hpp"
aoqi@0: #include "memory/cardTableModRefBS.hpp"
aoqi@0: #include "runtime/fprofiler.hpp"
aoqi@0: #include "runtime/handles.inline.hpp"
aoqi@0: #include "runtime/stubCodeGenerator.hpp"
aoqi@0: #include "runtime/stubRoutines.hpp"
aoqi@0: #ifdef TARGET_ARCH_x86
aoqi@0: # include "depChecker_x86.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_ARCH_sparc
aoqi@0: # include "depChecker_sparc.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_ARCH_zero
aoqi@0: # include "depChecker_zero.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_ARCH_arm
aoqi@0: # include "depChecker_arm.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_ARCH_ppc
aoqi@0: # include "depChecker_ppc.hpp"
aoqi@0: #endif
aoqi@1: #ifdef TARGET_ARCH_mips
aoqi@1: # include "depChecker_mips.hpp"
aoqi@1: #endif
aoqi@0: #ifdef SHARK
aoqi@0: #include "shark/sharkEntry.hpp"
aoqi@0: #endif
aoqi@0: 
aoqi@0: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
aoqi@0: 
aoqi@0: void*       Disassembler::_library               = NULL;
aoqi@0: bool        Disassembler::_tried_to_load_library = false;
aoqi@0: 
aoqi@0: // This routine is in the shared library:
aoqi@0: Disassembler::decode_func_virtual Disassembler::_decode_instructions_virtual = NULL;
aoqi@0: Disassembler::decode_func Disassembler::_decode_instructions = NULL;
aoqi@0: 
aoqi@0: static const char hsdis_library_name[] = "hsdis-"HOTSPOT_LIB_ARCH;
aoqi@0: static const char decode_instructions_virtual_name[] = "decode_instructions_virtual";
aoqi@0: static const char decode_instructions_name[] = "decode_instructions";
aoqi@0: static bool use_new_version = true;
aoqi@0: #define COMMENT_COLUMN  40 LP64_ONLY(+8) /*could be an option*/
aoqi@0: #define BYTES_COMMENT   ";..."  /* funky byte display comment */
aoqi@0: 
aoqi@0: bool Disassembler::load_library() {
aoqi@0:   if (_decode_instructions_virtual != NULL || _decode_instructions != NULL) {
aoqi@0:     // Already succeeded.
aoqi@0:     return true;
aoqi@0:   }
aoqi@0:   if (_tried_to_load_library) {
aoqi@0:     // Do not try twice.
aoqi@0:     // To force retry in debugger: assign _tried_to_load_library=0
aoqi@0:     return false;
aoqi@0:   }
aoqi@0:   // Try to load it.
aoqi@0:   char ebuf[1024];
aoqi@0:   char buf[JVM_MAXPATHLEN];
aoqi@0:   os::jvm_path(buf, sizeof(buf));
aoqi@0:   int jvm_offset = -1;
aoqi@0:   int lib_offset = -1;
aoqi@0:   {
aoqi@0:     // Match "jvm[^/]*" in jvm_path.
aoqi@0:     const char* base = buf;
aoqi@0:     const char* p = strrchr(buf, '/');
aoqi@0:     if (p != NULL) lib_offset = p - base + 1;
aoqi@0:     p = strstr(p ? p : base, "jvm");
aoqi@0:     if (p != NULL)  jvm_offset = p - base;
aoqi@0:   }
aoqi@0:   // Find the disassembler shared library.
aoqi@0:   // Search for several paths derived from libjvm, in this order:
aoqi@0:   // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so  (for compatibility)
aoqi@0:   // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
aoqi@0:   // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so
aoqi@0:   // 4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
aoqi@0:   if (jvm_offset >= 0) {
aoqi@0:     // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so
aoqi@0:     strcpy(&buf[jvm_offset], hsdis_library_name);
aoqi@0:     strcat(&buf[jvm_offset], os::dll_file_extension());
aoqi@0:     _library = os::dll_load(buf, ebuf, sizeof ebuf);
aoqi@0:     if (_library == NULL) {
aoqi@0:       // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
aoqi@0:       strcpy(&buf[lib_offset], hsdis_library_name);
aoqi@0:       strcat(&buf[lib_offset], os::dll_file_extension());
aoqi@0:       _library = os::dll_load(buf, ebuf, sizeof ebuf);
aoqi@0:     }
aoqi@0:     if (_library == NULL) {
aoqi@0:       // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so
aoqi@0:       buf[lib_offset - 1] = '\0';
aoqi@0:       const char* p = strrchr(buf, '/');
aoqi@0:       if (p != NULL) {
aoqi@0:         lib_offset = p - buf + 1;
aoqi@0:         strcpy(&buf[lib_offset], hsdis_library_name);
aoqi@0:         strcat(&buf[lib_offset], os::dll_file_extension());
aoqi@0:         _library = os::dll_load(buf, ebuf, sizeof ebuf);
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0:   if (_library == NULL) {
aoqi@0:     // 4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
aoqi@0:     strcpy(&buf[0], hsdis_library_name);
aoqi@0:     strcat(&buf[0], os::dll_file_extension());
aoqi@0:     _library = os::dll_load(buf, ebuf, sizeof ebuf);
aoqi@0:   }
aoqi@0:   if (_library != NULL) {
aoqi@0:     _decode_instructions_virtual = CAST_TO_FN_PTR(Disassembler::decode_func_virtual,
aoqi@0:                                           os::dll_lookup(_library, decode_instructions_virtual_name));
aoqi@0:   }
aoqi@0:   if (_decode_instructions_virtual == NULL) {
aoqi@0:     // could not spot in new version, try old version
aoqi@0:     _decode_instructions = CAST_TO_FN_PTR(Disassembler::decode_func,
aoqi@0:                                           os::dll_lookup(_library, decode_instructions_name));
aoqi@0:     use_new_version = false;
aoqi@0:   } else {
aoqi@0:     use_new_version = true;
aoqi@0:   }
aoqi@0:   _tried_to_load_library = true;
aoqi@0:   if (_decode_instructions_virtual == NULL && _decode_instructions == NULL) {
aoqi@0:     tty->print_cr("Could not load %s; %s; %s", buf,
aoqi@0:                   ((_library != NULL)
aoqi@0:                    ? "entry point is missing"
aoqi@0:                    : (WizardMode || PrintMiscellaneous)
aoqi@0:                    ? (const char*)ebuf
aoqi@0:                    : "library not loadable"),
aoqi@0:                   "PrintAssembly is disabled");
aoqi@0:     return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Success.
aoqi@0:   tty->print_cr("Loaded disassembler from %s", buf);
aoqi@0:   return true;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: class decode_env {
aoqi@0:  private:
aoqi@0:   nmethod*      _nm;
aoqi@0:   CodeBlob*     _code;
aoqi@0:   CodeStrings   _strings;
aoqi@0:   outputStream* _output;
aoqi@0:   address       _start, _end;
aoqi@0: 
aoqi@0:   char          _option_buf[512];
aoqi@0:   char          _print_raw;
aoqi@0:   bool          _print_pc;
aoqi@0:   bool          _print_bytes;
aoqi@0:   address       _cur_insn;
aoqi@0:   int           _total_ticks;
aoqi@0:   int           _bytes_per_line; // arch-specific formatting option
aoqi@0: 
aoqi@0:   static bool match(const char* event, const char* tag) {
aoqi@0:     size_t taglen = strlen(tag);
aoqi@0:     if (strncmp(event, tag, taglen) != 0)
aoqi@0:       return false;
aoqi@0:     char delim = event[taglen];
aoqi@0:     return delim == '\0' || delim == ' ' || delim == '/' || delim == '=';
aoqi@0:   }
aoqi@0: 
aoqi@0:   void collect_options(const char* p) {
aoqi@0:     if (p == NULL || p[0] == '\0')  return;
aoqi@0:     size_t opt_so_far = strlen(_option_buf);
aoqi@0:     if (opt_so_far + 1 + strlen(p) + 1 > sizeof(_option_buf))  return;
aoqi@0:     char* fillp = &_option_buf[opt_so_far];
aoqi@0:     if (opt_so_far > 0) *fillp++ = ',';
aoqi@0:     strcat(fillp, p);
aoqi@0:     // replace white space by commas:
aoqi@0:     char* q = fillp;
aoqi@0:     while ((q = strpbrk(q, " \t\n")) != NULL)
aoqi@0:       *q++ = ',';
aoqi@0:     // Note that multiple PrintAssemblyOptions flags accumulate with \n,
aoqi@0:     // which we want to be changed to a comma...
aoqi@0:   }
aoqi@0: 
aoqi@0:   void print_insn_labels();
aoqi@0:   void print_insn_bytes(address pc0, address pc);
aoqi@0:   void print_address(address value);
aoqi@0: 
aoqi@0:  public:
aoqi@0:   decode_env(CodeBlob* code, outputStream* output, CodeStrings c = CodeStrings());
aoqi@0: 
aoqi@0:   address decode_instructions(address start, address end);
aoqi@0: 
aoqi@0:   void start_insn(address pc) {
aoqi@0:     _cur_insn = pc;
aoqi@0:     output()->bol();
aoqi@0:     print_insn_labels();
aoqi@0:   }
aoqi@0: 
aoqi@0:   void end_insn(address pc) {
aoqi@0:     address pc0 = cur_insn();
aoqi@0:     outputStream* st = output();
aoqi@0:     if (_print_bytes && pc > pc0)
aoqi@0:       print_insn_bytes(pc0, pc);
aoqi@0:     if (_nm != NULL) {
aoqi@0:       _nm->print_code_comment_on(st, COMMENT_COLUMN, pc0, pc);
aoqi@0:       // this calls reloc_string_for which calls oop::print_value_on
aoqi@0:     }
aoqi@0: 
aoqi@0:     // Output pc bucket ticks if we have any
aoqi@0:     if (total_ticks() != 0) {
aoqi@0:       address bucket_pc = FlatProfiler::bucket_start_for(pc);
aoqi@0:       if (bucket_pc != NULL && bucket_pc > pc0 && bucket_pc <= pc) {
aoqi@0:         int bucket_count = FlatProfiler::bucket_count_for(pc0);
aoqi@0:         if (bucket_count != 0) {
aoqi@0:           st->bol();
aoqi@0:           st->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_ticks(), bucket_count);
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0:     // follow each complete insn by a nice newline
aoqi@0:     st->cr();
aoqi@0:   }
aoqi@0: 
aoqi@0:   address handle_event(const char* event, address arg);
aoqi@0: 
aoqi@0:   outputStream* output() { return _output; }
aoqi@0:   address cur_insn() { return _cur_insn; }
aoqi@0:   int total_ticks() { return _total_ticks; }
aoqi@0:   void set_total_ticks(int n) { _total_ticks = n; }
aoqi@0:   const char* options() { return _option_buf; }
aoqi@0: };
aoqi@0: 
aoqi@0: decode_env::decode_env(CodeBlob* code, outputStream* output, CodeStrings c) {
drchase@7149:   memset(this, 0, sizeof(*this)); // Beware, this zeroes bits of fields.
aoqi@0:   _output = output ? output : tty;
aoqi@0:   _code = code;
aoqi@0:   if (code != NULL && code->is_nmethod())
aoqi@0:     _nm = (nmethod*) code;
drchase@7149:   _strings.copy(c);
aoqi@0: 
aoqi@0:   // by default, output pc but not bytes:
aoqi@0:   _print_pc       = true;
aoqi@0:   _print_bytes    = false;
aoqi@0:   _bytes_per_line = Disassembler::pd_instruction_alignment();
aoqi@0: 
aoqi@0:   // parse the global option string:
aoqi@0:   collect_options(Disassembler::pd_cpu_opts());
aoqi@0:   collect_options(PrintAssemblyOptions);
aoqi@0: 
aoqi@0:   if (strstr(options(), "hsdis-")) {
aoqi@0:     if (strstr(options(), "hsdis-print-raw"))
aoqi@0:       _print_raw = (strstr(options(), "xml") ? 2 : 1);
aoqi@0:     if (strstr(options(), "hsdis-print-pc"))
aoqi@0:       _print_pc = !_print_pc;
aoqi@0:     if (strstr(options(), "hsdis-print-bytes"))
aoqi@0:       _print_bytes = !_print_bytes;
aoqi@0:   }
aoqi@0:   if (strstr(options(), "help")) {
aoqi@0:     tty->print_cr("PrintAssemblyOptions help:");
aoqi@0:     tty->print_cr("  hsdis-print-raw       test plugin by requesting raw output");
aoqi@0:     tty->print_cr("  hsdis-print-raw-xml   test plugin by requesting raw xml");
aoqi@0:     tty->print_cr("  hsdis-print-pc        turn off PC printing (on by default)");
aoqi@0:     tty->print_cr("  hsdis-print-bytes     turn on instruction byte output");
aoqi@0:     tty->print_cr("combined options: %s", options());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: address decode_env::handle_event(const char* event, address arg) {
aoqi@0:   if (match(event, "insn")) {
aoqi@0:     start_insn(arg);
aoqi@0:   } else if (match(event, "/insn")) {
aoqi@0:     end_insn(arg);
aoqi@0:   } else if (match(event, "addr")) {
aoqi@0:     if (arg != NULL) {
aoqi@0:       print_address(arg);
aoqi@0:       return arg;
aoqi@0:     }
aoqi@0:   } else if (match(event, "mach")) {
aoqi@0:     static char buffer[32] = { 0, };
aoqi@0:     if (strcmp(buffer, (const char*)arg) != 0 ||
aoqi@0:         strlen((const char*)arg) > sizeof(buffer) - 1) {
aoqi@0:       // Only print this when the mach changes
aoqi@0:       strncpy(buffer, (const char*)arg, sizeof(buffer) - 1);
aoqi@0:       output()->print_cr("[Disassembling for mach='%s']", arg);
aoqi@0:     }
aoqi@0:   } else if (match(event, "format bytes-per-line")) {
aoqi@0:     _bytes_per_line = (int) (intptr_t) arg;
aoqi@0:   } else {
aoqi@0:     // ignore unrecognized markup
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: // called by the disassembler to print out jump targets and data addresses
aoqi@0: void decode_env::print_address(address adr) {
aoqi@0:   outputStream* st = _output;
aoqi@0: 
aoqi@0:   if (adr == NULL) {
aoqi@0:     st->print("NULL");
aoqi@0:     return;
aoqi@0:   }
aoqi@0: 
aoqi@0:   int small_num = (int)(intptr_t)adr;
aoqi@0:   if ((intptr_t)adr == (intptr_t)small_num
aoqi@0:       && -1 <= small_num && small_num <= 9) {
aoqi@0:     st->print("%d", small_num);
aoqi@0:     return;
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (Universe::is_fully_initialized()) {
aoqi@0:     if (StubRoutines::contains(adr)) {
aoqi@0:       StubCodeDesc* desc = StubCodeDesc::desc_for(adr);
aoqi@0:       if (desc == NULL)
aoqi@0:         desc = StubCodeDesc::desc_for(adr + frame::pc_return_offset);
aoqi@0:       if (desc != NULL) {
aoqi@0:         st->print("Stub::%s", desc->name());
aoqi@0:         if (desc->begin() != adr)
aoqi@0:           st->print("%+d 0x%p",adr - desc->begin(), adr);
aoqi@0:         else if (WizardMode) st->print(" " PTR_FORMAT, adr);
aoqi@0:         return;
aoqi@0:       }
aoqi@0:       st->print("Stub::<unknown> " PTR_FORMAT, adr);
aoqi@0:       return;
aoqi@0:     }
aoqi@0: 
aoqi@0:     BarrierSet* bs = Universe::heap()->barrier_set();
aoqi@0:     if (bs->kind() == BarrierSet::CardTableModRef &&
aoqi@0:         adr == (address)((CardTableModRefBS*)(bs))->byte_map_base) {
aoqi@0:       st->print("word_map_base");
aoqi@0:       if (WizardMode) st->print(" " INTPTR_FORMAT, (intptr_t)adr);
aoqi@0:       return;
aoqi@0:     }
aoqi@0: 
aoqi@0:     oop obj;
aoqi@0:     if (_nm != NULL
aoqi@0:         && (obj = _nm->embeddedOop_at(cur_insn())) != NULL
aoqi@0:         && (address) obj == adr
aoqi@0:         && Universe::heap()->is_in(obj)
aoqi@0:         && Universe::heap()->is_in(obj->klass())) {
aoqi@0:       julong c = st->count();
aoqi@0:       obj->print_value_on(st);
aoqi@0:       if (st->count() == c) {
aoqi@0:         // No output.  (Can happen in product builds.)
aoqi@0:         st->print("(a %s)", obj->klass()->external_name());
aoqi@0:       }
aoqi@0:       return;
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Fall through to a simple (hexadecimal) numeral.
aoqi@0:   st->print(PTR_FORMAT, adr);
aoqi@0: }
aoqi@0: 
aoqi@0: void decode_env::print_insn_labels() {
aoqi@0:   address p = cur_insn();
aoqi@0:   outputStream* st = output();
aoqi@0:   CodeBlob* cb = _code;
aoqi@0:   if (cb != NULL) {
aoqi@0:     cb->print_block_comment(st, p);
aoqi@0:   }
aoqi@0:   _strings.print_block_comment(st, (intptr_t)(p - _start));
aoqi@0:   if (_print_pc) {
aoqi@0:     st->print("  " PTR_FORMAT ": ", p);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void decode_env::print_insn_bytes(address pc, address pc_limit) {
aoqi@0:   outputStream* st = output();
aoqi@0:   size_t incr = 1;
aoqi@0:   size_t perline = _bytes_per_line;
aoqi@0:   if ((size_t) Disassembler::pd_instruction_alignment() >= sizeof(int)
aoqi@0:       && !((uintptr_t)pc % sizeof(int))
aoqi@0:       && !((uintptr_t)pc_limit % sizeof(int))) {
aoqi@0:     incr = sizeof(int);
aoqi@0:     if (perline % incr)  perline += incr - (perline % incr);
aoqi@0:   }
aoqi@0:   while (pc < pc_limit) {
aoqi@0:     // tab to the desired column:
aoqi@0:     st->move_to(COMMENT_COLUMN);
aoqi@0:     address pc0 = pc;
aoqi@0:     address pc1 = pc + perline;
aoqi@0:     if (pc1 > pc_limit)  pc1 = pc_limit;
aoqi@0:     for (; pc < pc1; pc += incr) {
aoqi@0:       if (pc == pc0)
aoqi@0:         st->print(BYTES_COMMENT);
aoqi@0:       else if ((uint)(pc - pc0) % sizeof(int) == 0)
aoqi@0:         st->print(" ");         // put out a space on word boundaries
aoqi@0:       if (incr == sizeof(int))
aoqi@0:             st->print("%08lx", *(int*)pc);
aoqi@0:       else  st->print("%02x",   (*pc)&0xFF);
aoqi@0:     }
aoqi@0:     st->cr();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: static void* event_to_env(void* env_pv, const char* event, void* arg) {
aoqi@0:   decode_env* env = (decode_env*) env_pv;
aoqi@0:   return env->handle_event(event, (address) arg);
aoqi@0: }
aoqi@0: 
aoqi@0: ATTRIBUTE_PRINTF(2, 3)
aoqi@0: static int printf_to_env(void* env_pv, const char* format, ...) {
aoqi@0:   decode_env* env = (decode_env*) env_pv;
aoqi@0:   outputStream* st = env->output();
aoqi@0:   size_t flen = strlen(format);
aoqi@0:   const char* raw = NULL;
aoqi@0:   if (flen == 0)  return 0;
aoqi@0:   if (flen == 1 && format[0] == '\n') { st->bol(); return 1; }
aoqi@0:   if (flen < 2 ||
aoqi@0:       strchr(format, '%') == NULL) {
aoqi@0:     raw = format;
aoqi@0:   } else if (format[0] == '%' && format[1] == '%' &&
aoqi@0:              strchr(format+2, '%') == NULL) {
aoqi@0:     // happens a lot on machines with names like %foo
aoqi@0:     flen--;
aoqi@0:     raw = format+1;
aoqi@0:   }
aoqi@0:   if (raw != NULL) {
aoqi@0:     st->print_raw(raw, (int) flen);
aoqi@0:     return (int) flen;
aoqi@0:   }
aoqi@0:   va_list ap;
aoqi@0:   va_start(ap, format);
aoqi@0:   julong cnt0 = st->count();
aoqi@0:   st->vprint(format, ap);
aoqi@0:   julong cnt1 = st->count();
aoqi@0:   va_end(ap);
aoqi@0:   return (int)(cnt1 - cnt0);
aoqi@0: }
aoqi@0: 
aoqi@0: address decode_env::decode_instructions(address start, address end) {
aoqi@0:   _start = start; _end = end;
aoqi@0: 
aoqi@0:   assert(((((intptr_t)start | (intptr_t)end) % Disassembler::pd_instruction_alignment()) == 0), "misaligned insn addr");
aoqi@0: 
aoqi@0:   const int show_bytes = false; // for disassembler debugging
aoqi@0: 
aoqi@0:   //_version = Disassembler::pd_cpu_version();
aoqi@0: 
aoqi@0:   if (!Disassembler::can_decode()) {
aoqi@0:     return NULL;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // decode a series of instructions and return the end of the last instruction
aoqi@0: 
aoqi@0:   if (_print_raw) {
aoqi@0:     // Print whatever the library wants to print, w/o fancy callbacks.
aoqi@0:     // This is mainly for debugging the library itself.
aoqi@0:     FILE* out = stdout;
aoqi@0:     FILE* xmlout = (_print_raw > 1 ? out : NULL);
aoqi@0:     return use_new_version ?
aoqi@0:       (address)
aoqi@0:       (*Disassembler::_decode_instructions_virtual)((uintptr_t)start, (uintptr_t)end,
aoqi@0:                                                     start, end - start,
aoqi@0:                                                     NULL, (void*) xmlout,
aoqi@0:                                                     NULL, (void*) out,
aoqi@0:                                                     options(), 0/*nice new line*/)
aoqi@0:       :
aoqi@0:       (address)
aoqi@0:       (*Disassembler::_decode_instructions)(start, end,
aoqi@0:                                             NULL, (void*) xmlout,
aoqi@0:                                             NULL, (void*) out,
aoqi@0:                                             options());
aoqi@0:   }
aoqi@0: 
aoqi@0:   return use_new_version ?
aoqi@0:     (address)
aoqi@0:     (*Disassembler::_decode_instructions_virtual)((uintptr_t)start, (uintptr_t)end,
aoqi@0:                                                   start, end - start,
aoqi@0:                                                   &event_to_env,  (void*) this,
aoqi@0:                                                   &printf_to_env, (void*) this,
aoqi@0:                                                   options(), 0/*nice new line*/)
aoqi@0:     :
aoqi@0:     (address)
aoqi@0:     (*Disassembler::_decode_instructions)(start, end,
aoqi@0:                                           &event_to_env,  (void*) this,
aoqi@0:                                           &printf_to_env, (void*) this,
aoqi@0:                                           options());
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Disassembler::decode(CodeBlob* cb, outputStream* st) {
aoqi@0:   if (!load_library())  return;
aoqi@0:   decode_env env(cb, st);
aoqi@0:   env.output()->print_cr("Decoding CodeBlob " PTR_FORMAT, cb);
aoqi@0:   env.decode_instructions(cb->code_begin(), cb->code_end());
aoqi@0: }
aoqi@0: 
aoqi@0: void Disassembler::decode(address start, address end, outputStream* st, CodeStrings c) {
aoqi@0:   if (!load_library())  return;
aoqi@0:   decode_env env(CodeCache::find_blob_unsafe(start), st, c);
aoqi@0:   env.decode_instructions(start, end);
aoqi@0: }
aoqi@0: 
aoqi@0: void Disassembler::decode(nmethod* nm, outputStream* st) {
aoqi@0:   if (!load_library())  return;
aoqi@0:   decode_env env(nm, st);
aoqi@0:   env.output()->print_cr("Decoding compiled method " PTR_FORMAT ":", nm);
aoqi@0:   env.output()->print_cr("Code:");
aoqi@0: 
aoqi@0: #ifdef SHARK
aoqi@0:   SharkEntry* entry = (SharkEntry *) nm->code_begin();
aoqi@0:   unsigned char* p   = entry->code_start();
aoqi@0:   unsigned char* end = entry->code_limit();
aoqi@0: #else
aoqi@0:   unsigned char* p   = nm->code_begin();
aoqi@0:   unsigned char* end = nm->code_end();
aoqi@0: #endif // SHARK
aoqi@0: 
aoqi@0:   // If there has been profiling, print the buckets.
aoqi@0:   if (FlatProfiler::bucket_start_for(p) != NULL) {
aoqi@0:     unsigned char* p1 = p;
aoqi@0:     int total_bucket_count = 0;
aoqi@0:     while (p1 < end) {
aoqi@0:       unsigned char* p0 = p1;
aoqi@0:       p1 += pd_instruction_alignment();
aoqi@0:       address bucket_pc = FlatProfiler::bucket_start_for(p1);
aoqi@0:       if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p1)
aoqi@0:         total_bucket_count += FlatProfiler::bucket_count_for(p0);
aoqi@0:     }
aoqi@0:     env.set_total_ticks(total_bucket_count);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Print constant table.
aoqi@0:   if (nm->consts_size() > 0) {
aoqi@0:     nm->print_nmethod_labels(env.output(), nm->consts_begin());
aoqi@0:     int offset = 0;
aoqi@0:     for (address p = nm->consts_begin(); p < nm->consts_end(); p += 4, offset += 4) {
aoqi@0:       if ((offset % 8) == 0) {
aoqi@0:         env.output()->print_cr("  " PTR_FORMAT " (offset: %4d): " PTR32_FORMAT "   " PTR64_FORMAT, p, offset, *((int32_t*) p), *((int64_t*) p));
aoqi@0:       } else {
aoqi@0:         env.output()->print_cr("  " PTR_FORMAT " (offset: %4d): " PTR32_FORMAT,                    p, offset, *((int32_t*) p));
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   env.decode_instructions(p, end);
aoqi@0: }